CN107164658B - A kind of dental pulp needle material and preparation method - Google Patents

A kind of dental pulp needle material and preparation method Download PDF

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Publication number
CN107164658B
CN107164658B CN201710331976.0A CN201710331976A CN107164658B CN 107164658 B CN107164658 B CN 107164658B CN 201710331976 A CN201710331976 A CN 201710331976A CN 107164658 B CN107164658 B CN 107164658B
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tib
niti
nano wire
dental pulp
alloy wires
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CN107164658A (en
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任淑彬
李秀程
曲选辉
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University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
    • C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
    • 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
    • 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
    • A61L31/028—Other inorganic materials not covered by A61L31/022 - A61L31/026
    • 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
    • A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
    • C22C1/1052—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites by mixing and casting metal matrix composites with reaction
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
    • C22C32/0073—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only borides
    • 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
    • C22F1/006—Resulting in heat recoverable alloys with a memory effect
    • 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
    • C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt 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
    • A61L2400/00—Materials characterised by their function or physical properties
    • A61L2400/16—Materials with shape-memory or superelastic properties

Abstract

A kind of dental pulp needle material and preparation method thereof, i.e. TiB2Nano wire enhances NiTi shape-memory alloy wires and preparation method thereof, belongs to bio-medical material research field.The present invention proposes to use TiB2Nano wire enhances NiTi shape-memory alloy wires to make dental pulp needle, makes TiB by induction melting2The in-situ preparation in NiTi alloys, and combine forging, drawing process to make TiB by vacuum consumable (or electroslag remelting)2Nano wire finally axially aligns in NiTi B alloy wires, passes through in-situ preparation TiB in this way2It mutually and is allowed to align in NiTi B alloy wires in the form of nano wire, while NiTi alloys low elastic modulus, high elastic strain can be kept, higher intensity and wear-resisting property is obtained, to increase substantially the service life and reliability of dental pulp needle.

Description

A kind of dental pulp needle material and preparation method
Technical field
The invention belongs to bio-medical material research field, it is related to a kind of dental pulp needle material and preparation method thereof, that is, uses TiB2Nano wire is orientated enhancing NiTi shape-memory alloy wires to make dental pulp needle.
Background technology
Since with excellent shape memory characteristic, elastic performance and biocompatibility, closely equal atomic ratios NiTi alloys are It is had been widely used in medical instruments field.NiTi alloy dental pulp needles are to make full use of NiTi alloys in martensitic state When low elasticity modulus, smaller stress can cause larger elastic strain, and start temperature less than austenite transformation in temperature Spend (T<Strain the characteristics such as can retain always and be cleared up into pulp necrosis position by special cut edge when As), Especially very high flexibility is especially suitable for complicated dental pulp structure.
But dental pulp needle is relatively low with martensite NiTi alloy rigidities, wearability is poor.Meanwhile dental pulp needle rotating speed is usually 350-400 turns/min, torque 1.5-2N, therefore it is required that while there is material high flexibility to adapt to complicated teeth pith knot structure, tool There are high flexion torsion fatigue strength and wear-resisting property, to improve its service life, prevents the malpractices such as dental pulp needle fracture Occur.But NiTi alloys are as other pure alloy materials, high flexibility and high intensity, wearability are difficult while simultaneous It cares for, this results in NiTi alloy dental pulp needles often to occur fracture accident in clinical application.Therefore, ensureing that NiTi alloys are high-elastic Property strain, under the premise of low elastic modulus (namely high-flexibility), so that it is had high bending fatigue strength and wearability is Improve the critical issue that dental pulp needle life and reliability must solve.
Single independent nano wire has the elastic strain (4-7%) and yield strength of superelevation, and embodies than bulk The better mechanical performance of material, as its intensity higher, toughness are more preferable.Therefore by nano wire and it is likewise supplied with high elastic strain NiTi marmems are compound and make its orientations, are expected to acquisition high elastic strain, low elastic modulus and high intensity and have both Comprehensive performance.
Invention content
The present invention uses TiB2Nano wire is orientated enhancing NiTi B alloy wires and replaces current pure NiTi B alloy wires to make Dental pulp needle, and using vacuum induction melting-vacuum consumable remelting (or electroslag remelting)-forging-rolling-hot pull-cold drawing Technique makes TiB2Nano wire in-situ preparation and axially arranged in parallel along silk in NiTi B alloy wires,
A kind of dental pulp needle material, it is characterised in that：Using TiB2Nano wire enhances NiTi shape-memory alloy wires to make Make dental pulp needle material, TiB2The volume fraction 3%-50% of nano wire；TiB2Nano wire is arranged in parallel along the axial direction of silk.
The preparation method of dental pulp needle material as described above, is as follows：
1, made using the NiB alloys of the titanium sponge of electrolytic nickel Ni, 99.95wt.% of 99.96wt.%, B content 20wt% For raw material, TiB2/NiTi master alloys are prepared by vacuum induction melting, and be cast into ingot casting；Then mother TiB2/NiTi is closed Golden ingot casting carries out vacuum consumable remelting or electroslag remelting, and TiB is controlled by solidifying degree of supercooling and speed during control consumable2 Forming core, the direction of growth and form, realize TiB2It is linearly uniformly distributed along solidification direction in NiTi alloys, while diameter is wanted It controls within the scope of nanoscale.
2, vacuum consumable ingot is subjected to hammer cogging and is rolled into bar, the bar hot-drawn of rolling is pulled into silk, finally again The silk cold drawing that hot pull is obtained is to 0.3-1.0mm different sizes；
3, annealing heat-treats are carried out after cold drawing again, vacuum consumable ingot is subjected to hammer cogging, rolling disk circle, silk material hot-drawn It pulls out with during cold drawing, each step is along axial direction and carries out plastic deformation flowing, the TiB in deformation process2Nano wire It is as the flowing of NiTi matrixes is gradually automatically adjusted to axis direction, therefore the process of thermal deformation is also TiB2It is gradually completing edge The process of axial orientation arrangement, finally obtains TiB2Nano wire is orientated enhancing NiTi B alloy wires.
The present invention proposes to use TiB2Ceramic nano line carries out orientation reinforcing to NiTi alloys, makes TiB by induction melting2 The in-situ preparation in NiTi alloys, and combine forging, drawing process to make TiB by vacuum consumable2Nano wire is finally in NiTi It is axially aligned in B alloy wire, passes through in-situ preparation TiB in this way2Mutually and it is allowed in the form of nano wire in NiTi B alloy wires In align, while NiTi alloys low elastic modulus, high elastic strain can be kept, obtain higher intensity and wearability Can, to increase substantially the service life and reliability of dental pulp needle.
It is an advantage of the current invention that TiB is introduced in (1) NiTi B alloy wires in the form of in-situ preparation2Nano wire, and make its edge Axial orientation distribution, can make up the deficiency of NiTi alloy strengths, obtains and takes into account high-flexibility and high intensity dual property Dental pulp needle material, the performance and reliability of dental pulp needle will all be greatly improved；(2) it is closed using NiB in smelting process Gold is used as the sources B, can effectively reduce smelting temperature, reduce the scaling loss of B, TiB can be realized by vacuum consumable remelting processing2? In-situ preparation in NiTi and it is uniformly directed distribution.
Description of the drawings：
Fig. 1 is the process flow chart of the present invention.
Specific implementation mode:
Embodiment 1:Prepare the TiB of Φ 1.0mm2(5vol%)/NiTi B alloy wires
Mother alloy ingot is prepared using the vacuum induction melting furnace of 50kg, dispensing is carried out by master alloy ingot 40kg, according to TiB in final B alloy wire2Volume fraction 5%, Ni and Ti atomic ratios 1：1 calculates, and electrolytic nickel should be added 19445.8 grams, titanium sponge 18340.6 grams are added, NiB alloys (B accounts for 20wt%) are added 2213.8 grams, and it is female to prepare TiB2/NiTi by vacuum induction melting Alloy, and it is cast into the ingot casting of Φ 70mm specifications；Then TiB2/NiTi mother alloy ingots are subjected to vacuum consumable remelting, remelting Ingot specification is Φ 140mm, then simultaneously hot rolling is forged and hot to Φ 16mm bars by vacuum consumable ingot progress hammer cogging to Φ 60mm It is 850 DEG C to roll temperature, by the Φ 16mm bars hot pulls of rolling to Φ 2mm, 750 DEG C of drawing temperature, finally again by hot pull 2mm cold drawings of obtained Φ carry out annealing heat-treats to 1.0mm, 350 DEG C of annealing temperature, and it is Φ to finally obtain specification The TiB of 1.0mm2(5vol%)/NiTi B alloy wires
Embodiment 2:Prepare the TiB of Φ 0.3mm2(10vol%)/NiTi B alloy wires
Mother alloy ingot is prepared using the vacuum induction melting furnace of 50kg, dispensing is carried out by master alloy ingot 40kg, according to TiB volume fractions 10%, Ni and Ti atomic ratios 1 in final B alloy wire：1 calculates, and electrolytic nickel should be added 16830.4 grams, titanium sponge 18693.1 grams are added, NiB alloys (B accounts for 20wt%) are added 4476.5 grams, and it is female to prepare TiB2/NiTi by vacuum induction melting Alloy, and it is cast into the ingot casting of Φ 90mm specifications；Then TiB2/NiTi mother alloy ingots are subjected to vacuum consumable remelting, remelting Ingot specification is Φ 150mm, then simultaneously hot rolling is forged and hot to Φ 20mm bars by vacuum consumable ingot progress hammer cogging to Φ 80mm It is 900 DEG C to roll temperature, by the Φ 20mm bars hot pulls of rolling to Φ 3mm, 800 DEG C of drawing temperature, finally again by hot pull 3mm cold drawings of obtained Φ carry out annealing heat-treats to 0.3mm, 500 DEG C of annealing temperature, and it is Φ to finally obtain specification The TiB of 0.3mm2(10vol%)/NiTi B alloy wires.

Claims (1)

1. a kind of dental pulp needle material, it is characterised in that：Using TiB2Nano wire enhances NiTi shape-memory alloy wires to make tooth Broach material, TiB2The volume fraction 3%-50% of nano wire；TiB2Nano wire is arranged in parallel along the axial direction of silk；
The preparation method of the dental pulp needle material, is as follows：
(1) the NiB alloys of the titanium sponge, B content 20wt% that use electrolytic nickel Ni, 99.95wt.% of 99.96wt.% are as former Material prepares TiB by vacuum induction melting2/ NiTi master alloys, and it is cast into ingot casting；Then by TiB2/ NiTi master alloys are cast Ingot carries out vacuum consumable remelting or electroslag remelting, and TiB is controlled by solidifying degree of supercooling and speed during control consumable2Shape Core, the direction of growth and form realize TiB2It is linearly uniformly distributed along solidification direction in NiTi alloys, while diameter will control Into nanoscale；
(2) vacuum consumable ingot is subjected to hammer cogging and is rolled into bar, the bar hot-drawn of rolling is pulled into silk, it finally again will be hot The silk cold drawing that drawing obtains is to 0.3-1.0mm different sizes；
(3) annealing heat-treats are carried out after cold drawing again, vacuum consumable ingot is subjected to hammer cogging, rolling disk circle, silk material hot pull During cold drawing, each step, which is along, axially carries out plastic deformation flowing, the TiB in deformation process2Nano wire is also As the flowing of NiTi matrixes is gradually automatically adjusted to axis direction, therefore the process of thermal deformation is also TiB2It is gradually completing along axis To the process aligned, TiB is finally obtained2Nano wire is orientated enhancing NiTi B alloy wires.
CN201710331976.0A 2017-05-11 2017-05-11 A kind of dental pulp needle material and preparation method Active CN107164658B (en)

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CN111979468A (en) * 2020-08-11 2020-11-24 哈尔滨工程大学 Antibacterial orthodontic arch wire and manufacturing method thereof

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US20090018644A1 (en) * 2007-07-13 2009-01-15 Jan Weber Boron-Enhanced Shape Memory Endoprostheses
CN103320724B (en) * 2013-06-24 2015-03-04 中国石油大学(北京) Mo micro-nanowire/CuZnAl memory alloy composite material and preparation method thereof
CN105112907B (en) * 2015-08-25 2018-02-02 上海工程技术大学 Fabricated in situ TiB2/ TiC strengthens Ti2Ni/TiNi two-phase metallic compound base composite coatings and preparation method

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