CN106399885A - Zinc alloy, heat treatment method of zinc alloy and implant material - Google Patents

Zinc alloy, heat treatment method of zinc alloy and implant material Download PDF

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Publication number
CN106399885A
CN106399885A CN201610870994.1A CN201610870994A CN106399885A CN 106399885 A CN106399885 A CN 106399885A CN 201610870994 A CN201610870994 A CN 201610870994A CN 106399885 A CN106399885 A CN 106399885A
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Prior art keywords
kirsite
heat treatment
support
zinc alloy
treatment method
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屈功奇
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XI'AN AIDE WANSI MEDICAL SCIENCE & TECHNOLOGY Co Ltd
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XI'AN AIDE WANSI MEDICAL SCIENCE & TECHNOLOGY Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/165—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon of zinc or cadmium or alloys based thereon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/02—Inorganic materials
    • A61L31/022—Metals or alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C18/00—Alloys based on zinc
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C18/00—Alloys based on zinc
    • C22C18/02—Alloys based on zinc with copper as the next major constituent

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Surgery (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Inorganic Chemistry (AREA)

Abstract

The invention provides a zinc alloy, a heat treatment method of the zinc alloy and an implant material to solve the problems that in the prior art, a zinc alloy is high in degradation speed and poor in mechanical performance. According to the zinc alloy, the heat treatment method of the zinc alloy and the implant material, by means of the method for carrying out heat treatment on the material, the mechanical performance of the zinc alloy serving as the implant material (a stent) is improved, the pitting corrosion degree of the stent is obviously reduced, homogeneity of the stent is improved, the degradation rate of the zinc alloy stent material is effectively restrained, and therefore the overall performance of the zinc alloy stent is improved.

Description

A kind of kirsite and its heat treatment method, embedded material
Technical field
The present invention relates to technical field of metal heat treatment, in particular it relates to a kind of kirsite and its heat treatment method, plant Enter material.
Background technology
Pure zinc and its alloy material are one of popular research objects of current human body degradable metal timbering material, mainly by In：The degradable kirsite of human body can effectively reduce the secondary thrombus shape in traditional non-degradable stenter to implant 1-5 first Become probability, and compared with the magnesium alloy materials that search time is longer, kirsite degradation rate is slow, length of holding time can reach and control Treat the intensity needed for thrombus to hold time；Secondly, produced by kirsite degraded, the product such as zinc ion is the micro unit of needed by human body Element, can be absorbed by the body or safe metabolism.For example：U.S. clinical creative design (ACI) recommends human body must take in 2.5 daily To 6.4 milligrams of zinc, adult daily intakes about 300 milligrams of zinc and is only possible to have certain toxic reaction.
The zinc of one piece of zinc-base degradable bone peg release daily is about 0.2-0.3 milligram, even if these zinc ions are all released It is put in blood vessel, also well below intake needed by human.
However, zinc alloy material yet suffers from present, and degradation rate is uncontrollable, the low problem of mechanical strength, especially its fall Solution is too fast to directly result in the not up to standard of properties of product, therefore, improve support mechanical property, be that support is played stably in human body The key of effect, meanwhile, reaches the important performance indexes that Appropriate degradation speed is then that support meets degradable requirement.
Content of the invention
Solve the above problems employed technical scheme comprise that a kind of vibration generating device and preparation method thereof, embedded material.
A kind of heat treatment method of kirsite that the present invention provides, comprises the following steps：
Hyperthermic treatment, pending kirsite is heated up from the first initial temperature, is warming up to finishing temperature；
Pending kirsite is incubated under finishing temperature by isothermal holding；
Cooling is processed, and pending kirsite is cooled to the second initial temperature.
Preferably, in described hyperthermic treatment, heating rate is 3-5 DEG C/min.
Preferably, the first described initial temperature is 10-30 DEG C；
Described second initial temperature is 10-30 DEG C.
Preferably, described finishing temperature is 160-190 DEG C.
Preferably, described finishing temperature is 170-180 DEG C.
Preferably, in described isothermal holding, pending kirsite is incubated 20-100min.
Preferably, pending kirsite is incubated 30-80min.
Preferably, heat treatment is to carry out in air atmosphere.
The present invention also aims to providing a kind of kirsite, it is the heat treatment method preparation using above-mentioned kirsite 's.
The present invention also aims to providing a kind of embedded material, it is above-mentioned kirsite preparation.
A kind of kirsite and its heat treatment method, embedded material that the present invention provides, by above-mentioned heat treatment method, carry The high mechanical property as embedded material (support), hence it is evident that reducing support point degree of corrosion, improves support uniformity, and Effectively inhibit kirsite timbering material degradation rate, thus improve the overall performance of zinc alloy material.
Brief description
Fig. 1 is the stress-strain curve not being heat-treated (comparative example) kirsite support；
Fig. 2 is the stress-strain curve of kirsite support (embodiment 1) after 160 DEG C of heat treatments；
Fig. 3 is the stress-strain curve of kirsite support (embodiment 4) after 190 DEG C of heat treatments；
Fig. 4 is the stress-strain curve of kirsite support (embodiment 5) after 220 DEG C of heat treatments；
Fig. 5 is the metallograph not being heat-treated kirsite support (comparative example)；
Fig. 6 is the metallograph of 190 DEG C of heat treatments kirsite support (embodiment 4)；
Fig. 7 is the metallograph of 220 DEG C of heat treatments kirsite support (embodiment 5)；
Fig. 8 be not heat-treated kirsite support (comparative example) with heat treatment after kirsite support (embodiment 4) electrochemistry Test data-open circuit voltage curve；
Fig. 9 be not heat-treated kirsite support (comparative example) with heat treatment after kirsite support (embodiment 4) electrochemistry Test data-AC impedance curve；
Figure 10 be not heat-treated kirsite support (comparative example) with heat treatment after kirsite support (embodiment 4) electrochemistry Test data-dynamic potential polarization curve；
Figure 11 is the electrochemical test data-Tafel curve not being heat-treated kirsite support (comparative example)；
Figure 12 is the electrochemical test data-Tafel curve of kirsite support (embodiment 4) after heat treatment.
Specific embodiment
For making those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and specific embodiment party Formula is described in further detail to the present invention.
In the present invention, the pending kirsite of employing consists of：Ce0.1%, Mg0.5%, Ca0.1%, Cu1.5%, its Remaining for Zn.It should be appreciated that the pending kirsite being similarly composed is also applicable, for example, consist of the zinc of following ranges Alloy Ce0.001%～2%, Mg0.001%～2%, Ca0.001%～2%, Cu0.01%～3%, remaining is Zn.
Example below will be tested accordingly using above-mentioned pending kirsite.
Comparative example
With the support of pending kirsite preparation as object, it is cleaned by ultrasonic 5min first with absolute ethyl alcohol；
Then, put in tube furnace using clean dry pot support, setting tube furnace heating schedule is：Protect at 25 DEG C of room temperature Warm 100min, whole process is all carried out under air atmosphere.Kirsite support take out after using washes of absolute alcohol and cold wind dry up to Room temperature, preserves under the conditions of vacuum drying, carries out the dependence tests such as mechanical property.
Embodiment 1
With the support of pending kirsite preparation as object, it is cleaned by ultrasonic 5min first with absolute ethyl alcohol；
Then, put in tube furnace using clean dry pot support, be heat-treated, wherein, heat treatment is all in air gas Carry out under atmosphere：
Hyperthermic treatment, pending kirsite is carried out hyperthermic treatment for 25 DEG C from the first initial temperature, heating rate be 3 DEG C/ Min, is warming up to 160 DEG C of finishing temperature；
Pending kirsite is carried out being incubated 30min under finishing temperature by isothermal holding；
Cooling is processed, and pending kirsite is cooled to the second initial temperature；Using anhydrous after i.e. kirsite support takes out Ethanol purge, and cold wind dries up to 25 DEG C of the second initial temperature, preserves support, carry out the phases such as mechanical property under the conditions of vacuum drying Close test.
Embodiment 2
With the support of pending kirsite preparation as object, it is cleaned by ultrasonic 5min first with absolute ethyl alcohol；
Then, put in tube furnace using clean dry pot support, be heat-treated, wherein, heat treatment is all in air gas Carry out under atmosphere：
Hyperthermic treatment, pending kirsite is carried out hyperthermic treatment for 10 DEG C from the first initial temperature, heating rate be 4 DEG C/ Min, is warming up to 170 DEG C of finishing temperature；
Pending kirsite is carried out being incubated 50min under finishing temperature by isothermal holding；
Cooling is processed, and pending kirsite is cooled to the second initial temperature；Using anhydrous after i.e. kirsite support takes out Ethanol purge, and cold wind dries up to 30 DEG C of the second initial temperature, preserves support, carry out the phases such as mechanical property under the conditions of vacuum drying Close test.
Embodiment 3
With the support of pending kirsite preparation as object, it is cleaned by ultrasonic 5min first with absolute ethyl alcohol；
Then, put in tube furnace using clean dry pot support, be heat-treated, wherein, heat treatment is all in air gas Carry out under atmosphere：
Hyperthermic treatment, pending kirsite is carried out hyperthermic treatment for 30 DEG C from the first initial temperature, heating rate be 3 DEG C/ Min, is warming up to 180 DEG C of finishing temperature；
Pending kirsite is carried out being incubated 80min under finishing temperature by isothermal holding；
Cooling is processed, and pending kirsite is cooled to the second initial temperature；Using anhydrous after i.e. kirsite support takes out Ethanol purge, and cold wind dries up to 10 DEG C of the second initial temperature, preserves support, carry out the phases such as mechanical property under the conditions of vacuum drying Close test.
Embodiment 4
With the support of pending kirsite preparation as object, it is cleaned by ultrasonic 5min first with absolute ethyl alcohol；
Then, put in tube furnace using clean dry pot support, be heat-treated, wherein, heat treatment is all in air gas Carry out under atmosphere：
Hyperthermic treatment, pending kirsite is carried out hyperthermic treatment for 20 DEG C from the first initial temperature, heating rate be 4 DEG C/ Min, is warming up to 190 DEG C of finishing temperature；
Pending kirsite is carried out being incubated 4min under finishing temperature by isothermal holding；
Cooling is processed, and pending kirsite is cooled to the second initial temperature；Using anhydrous after i.e. kirsite support takes out Ethanol purge, and cold wind dries up to 20 DEG C of the second initial temperature, preserves support, carry out the phases such as mechanical property under the conditions of vacuum drying Close test.
Embodiment 5
With the support of pending kirsite preparation as object, it is cleaned by ultrasonic 5min first with absolute ethyl alcohol；
Then, put in tube furnace using clean dry pot support, be heat-treated, wherein, heat treatment is all in air gas Carry out under atmosphere：
Hyperthermic treatment, pending kirsite is carried out hyperthermic treatment for 30 DEG C from the first initial temperature, heating rate be 5 DEG C/ Min, is warming up to 220 DEG C of finishing temperature；
Pending kirsite is carried out being incubated 20min under finishing temperature by isothermal holding；
Cooling is processed, and pending kirsite is cooled to the second initial temperature；Using anhydrous after i.e. kirsite support takes out Ethanol purge, and cold wind dries up to 25 DEG C of the second initial temperature, preserves support, carry out the phases such as mechanical property under the conditions of vacuum drying Close test.
Embodiment 6
With the support of pending kirsite preparation as object, it is cleaned by ultrasonic 5min first with absolute ethyl alcohol；
Then, put in tube furnace using clean dry pot support, be heat-treated, wherein, heat treatment is all in air gas Carry out under atmosphere：
Hyperthermic treatment, pending kirsite is carried out hyperthermic treatment for 15 DEG C from the first initial temperature, heating rate be 5 DEG C/ Min, is warming up to 250 DEG C of finishing temperature；
Pending kirsite is carried out being incubated 70min under finishing temperature by isothermal holding；
Cooling is processed, and pending kirsite is cooled to the second initial temperature；Using anhydrous after i.e. kirsite support takes out Ethanol purge, and cold wind dries up to 25 DEG C of the second initial temperature, preserves support, carry out the phases such as mechanical property under the conditions of vacuum drying Close test.
The heat treatment condition of table 1 comparative example and embodiment employing and partial test result
The present invention carries out its power of contrast test to the kirsite support through Overheating Treatment and nonheat-treated kirsite support Learn performance and chemical property；Wherein, the kirsite being thermally treated resulting in embodiment 4 chosen by the kirsite support through Overheating Treatment Support is representative, the kirsite support chosen without the kirsite of Overheating Treatment in comparative example is representative.
Wherein, the method for testing of mechanical property is：Electronic universal tester using Jiu Bin instrument (Shanghai) Co., Ltd. Kirsite support is tested, model JB-121A, rate of extension is 1mm/s, tubing sample preparation is：Using a diameter of 1.65 The red copper bar of～1.76mm, as fuse, is through inside tubing, facilitates stretching-machine to clamp.
From table 1 and Fig. 1-4, from the point of view of mechanical property, when keeping temperature is too low, such as 25 DEG C of room temperature, kirsite support Stress when reaching maximum, corresponding strain value is only 3%, does not much reach the strain value needed for structure design and is more than or equal to 15% requirement；
Be heat-treated at 160 DEG C -190 DEG C, when stress reaches maximum, dependent variable be more than or equal to 15%, and, stress Value is more than or equal to 240MPa, can meet supporting structure design requirement completely.
When temperature continues to raise (more than or equal to 190 DEG C), for example, 220 DEG C and 250 DEG C are heat-treated although strain value Higher than 15%, but its tensile strength is too small, in below 240MPa it is impossible to reach the support force required by support.
Can be seen that when heat treatment temperature is below 190 DEG C from the Metallographic Analysis of Fig. 5-7, belong to stress relief annealing, zinc While alloy mechanical property changes, crystallite dimension does not change, but when temperature is heat-treated more than 190 DEG C, kirsite Recrystallize, crystallite dimension becomes big, lead to the destruction of material inherent structure so that alloy property is deteriorated, therefore select 160 DEG C -190 DEG C of temperature range is heat-treated to kirsite, can prevent kirsite from recrystallizing, make stress maximum right simultaneously Deserved strain value meets design code；
All electro-chemical tests are all carried out on Shanghai occasion China 604E electrochemical workstation, using three electrode test systems, With respective holder as working electrode, saturated calomel electrode is reference electrode, and platinum filament is to electrode, wherein, the preparation of working electrode Method recommends method to carry out according to GB YY/T0695-2008.
Fig. 8 be not heat-treated kirsite support (comparative example) with heat treatment after kirsite support (embodiment 4) electrochemistry Test data-open circuit voltage curve；
In electro-chemical test, open-circuit voltage test condition is：1h is tested, with steady state potential as final result under 0～-2V；
As can see from Figure 8, after heat treatment, the open circuit curve of kirsite support (embodiment 4) is more steady, and it is described Surface stability is higher, and uniformity is more preferable；
Fig. 9 be not heat-treated kirsite support (comparative example) with heat treatment after kirsite support (embodiment 4) electrochemistry Test data-AC impedance curve；
In stable state OCP+- 0.010V upper and lower fluctuation range build-in test during ac impedance measurement, highest frequency is 30000HZ, low-limit frequency is 0.1HZ.
Table 2 is parametric results after AC impedance figure Equivalent Circuit Fitting, from the point of view of both combine, AC impedance etc. after heat treatment Have more a matching impedance with respect to nonheat-treated in effect circuit fitting parameter, illustrate that being heat-treated after-poppet surface defines one Layer passivating film, the Faradaic impedance Rct1 (564.2ohm/cm of the kirsite support being simultaneously heat-treated2), diffusion impedance Rf1 (397.3ohm/cm2) compare more nonheat-treated Faradaic impedance Rct2 (504.4ohm/cm2), diffusion impedance Rf2 (200.7ohm/cm2) for, the former all has increase, illustrates that being heat-treated after-poppet material occurs the resistance of corrosion reaction bigger, by In the formation of passivating film, the resistance that electrolyte is diffused into material surface also becomes big, thus improve the anticorrosive of kirsite support Ability, reduces its corrosion rate to a certain extent.
Table 2 is not heat-treated the electrochemistry survey of kirsite support (embodiment 4) after kirsite support (comparative example) and heat treatment Examination data-AC impedance Equivalent Circuit Fitting data
Parameter It is not heat-treated Heat treatment
Contact impedance Rs (ohm/cm2) 23.3 14.54
Electric leakage parameter CPE (S/sn/cm2) - 0.0145
Film resistive Rp (ohm/cm2) - 39.72
Electric leakage parameter CPE (S/sn/cm2) 0.0003699 0.0003578
Faradaic impedance Rct (ohm/cm2) 5044 564.2
Electric leakage parameter CPE (S/sn/cm2) 0.00135 1.334E-5
Diffusion impedance (ohm/cm2) 200.7 397.3
Figure 10 be not heat-treated kirsite support (comparative example) with heat treatment after kirsite support (embodiment 4) electrochemistry Test data-dynamic potential polarization curve；
During dynamic potential polarization curve test, voltage range is that stable state open-circuit voltage+0.3V arrives stable state OCP -0.2V, sweeps Retouch speed to carry out for 0.5mV/s.
Anode flowpath part from Figure 10 can be seen that and not be heat-treated kirsite support in -0.9V appearance significantly folding Point, illustrates that zinc alloy material occurs obvious spot corrosion under this current potential, and after being heat-treated, the anodic polarization curves of zinc alloy material does not have There is obvious break, illustrate that Technology for Heating Processing substantially inhibits kirsite support spot corrosion, to analyze in conjunction with results of AC impedance, this Caused by being likely due to the generation of zinc alloy material surface passivated membrane.
Figure 11,12 give be not heat-treated kirsite support (comparative example) with heat treatment after kirsite support (embodiment 4) Corrosion current be respectively 6.792*10-6A, 3.548*10-6A, because corrosion current is directly proportional to the corrosion rate of alloy, because This can compare the corrosion rate speed of the two using corrosion current, from the data obtained as can be seen that heat treatment after kirsite The corrosion rate of support is 0.522 times of non-heat treatment fixture, therefore, it can intuitively judge that heat treatment can effectively reduce The corrosion rate of kirsite support, thus to some extent solve the too fast problem of kirsite scaffold degradation.
In sum, compared with not thermally treated, material mechanical performance carries the kirsite support through Overheating Treatment significantly Height, more preferably, erosion resistance greatly improves gained rack surface uniformity, point corrosion also be improved significantly, effectively drop simultaneously Its corrosion rate low.
It is understood that the embodiment of above principle being intended to be merely illustrative of the present and the exemplary enforcement adopting Mode, but the invention is not limited in this.For those skilled in the art, in the essence without departing from the present invention In the case of god and essence, various modifications and improvement can be made, these modifications and improvement are also considered as protection scope of the present invention.

Claims (10)

1. a kind of heat treatment method of kirsite is it is characterised in that comprise the following steps：
Hyperthermic treatment, pending kirsite is heated up from the first initial temperature, is warming up to finishing temperature；
Pending kirsite is incubated under finishing temperature by isothermal holding；
Cooling is processed, and pending kirsite is cooled to the second initial temperature.
2. the heat treatment method of kirsite as claimed in claim 1 is it is characterised in that in described hyperthermic treatment, heat up speed Rate is 3-5 DEG C/min.
3. the heat treatment method of kirsite as claimed in claim 1 is it is characterised in that the first described initial temperature is 10- 30℃；
Described second initial temperature is 10-30 DEG C.
4. the heat treatment method of kirsite as claimed in claim 1 is it is characterised in that described finishing temperature is 160-190 ℃.
5. the heat treatment method of kirsite as claimed in claim 4 is it is characterised in that described finishing temperature is 170-180 ℃.
6. the heat treatment method of kirsite as claimed in claim 1 will be it is characterised in that in described isothermal holding, will wait to locate Reason kirsite insulation 20-100min.
7. the heat treatment method of kirsite as claimed in claim 6 is it is characterised in that be incubated 30- by pending kirsite 80min.
8. the heat treatment method of described kirsite as arbitrary in claim 1-7 is it is characterised in that heat treatment is in air atmosphere Under carry out.
9. a kind of kirsite is it is characterised in that be the heat treatment method using described kirsite as arbitrary in claim 1-8 Preparation.
10. a kind of embedded material is it is characterised in that be using kirsite as claimed in claim 9 preparation.
CN201610870994.1A 2016-09-30 2016-09-30 Zinc alloy, heat treatment method of zinc alloy and implant material Pending CN106399885A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103736152A (en) * 2013-12-26 2014-04-23 西安爱德万思医疗科技有限公司 Anti-corrosion high-toughness zinc alloy implant material capable of being absorbed by human body
CN104328312A (en) * 2014-10-20 2015-02-04 东北大学 Medical biodegradable zinc alloy and preparation method thereof
WO2015147183A1 (en) * 2014-03-28 2015-10-01 古河電気工業株式会社 Zinc alloy pipe material, method for manufacturing same, stent formed using zinc alloy pipe material, and method for manufacturing same
CN105063427A (en) * 2015-08-28 2015-11-18 中国科学院金属研究所 Magnetic compatibility zinc alloy and application thereof
CN105648272A (en) * 2016-02-01 2016-06-08 中国科学院宁波材料技术与工程研究所 Degradable zinc alloy material, and preparation method and application thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103736152A (en) * 2013-12-26 2014-04-23 西安爱德万思医疗科技有限公司 Anti-corrosion high-toughness zinc alloy implant material capable of being absorbed by human body
WO2015147183A1 (en) * 2014-03-28 2015-10-01 古河電気工業株式会社 Zinc alloy pipe material, method for manufacturing same, stent formed using zinc alloy pipe material, and method for manufacturing same
CN104328312A (en) * 2014-10-20 2015-02-04 东北大学 Medical biodegradable zinc alloy and preparation method thereof
CN105063427A (en) * 2015-08-28 2015-11-18 中国科学院金属研究所 Magnetic compatibility zinc alloy and application thereof
CN105648272A (en) * 2016-02-01 2016-06-08 中国科学院宁波材料技术与工程研究所 Degradable zinc alloy material, and preparation method and application thereof

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Title
刘瑞玲等编: "《铸造实用数据速查手册 第2版》", 31 May 2014, 机械工业出版社 *

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Application publication date: 20170215