CN1778978A - Toothed porcelain alloy and production thereof - Google Patents
Toothed porcelain alloy and production thereof Download PDFInfo
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- CN1778978A CN1778978A CN 200410079578 CN200410079578A CN1778978A CN 1778978 A CN1778978 A CN 1778978A CN 200410079578 CN200410079578 CN 200410079578 CN 200410079578 A CN200410079578 A CN 200410079578A CN 1778978 A CN1778978 A CN 1778978A
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Abstract
A method of producing a new kind of dental alloy. Several constituents such as Ag,Al,Ti,Mn and Nb were added into the base which was made of Ni-Cr-Mo.After that, Vacuum smelting and microcast process were used to do preparation. The new alloy meets the criterion of dentistry application.
Description
A kind of toothed porcelain alloy and preparation method.The invention belongs to medical tooth dental repair material.
In tooth section recovery technique, make hat, fixed or movable partial denture, need to select suitable material to make it satisfied: (1) is nontoxic to human body, good biocompatibility; (2) stable chemical performance; (3) physicals is fit to; (4) be easy to processing or moulding.Using more general pfm has precious metal alloys, as the Au-Pt base, and Pd-Ag base alloy, and non-noble metal Ni-Cr is an alloy.The consumption maximum be Ni-Cr-Mo system and the alloy that contains Al, Be, Co.Though add the casting characteristics that Be can improve alloy, be easy to control the oxidisability on surface in the porcelain sintering process, reduce about 200 ℃ of solidus temperature; But after adding Be, the corrosion resistance variation of Ni-Cr-Mo alloy promotes the Ni ion stripping concentration to increase, and not only Be is harmful, also causes the harm of Ni to human body.
Purpose of the present invention be will work out a kind ofly not contain Be, and performance meets or exceeds the Ni-Cr-Mo alloy system dental material that contains Be, and makes it practical application.
The technical solution adopted in the present invention is: toothed porcelain alloy is base with Ni-Cr-Mo, and its composition is weight %:Ni73.5～76.0, Cr11.0～14.5, Mo3.6～7.5, Al0.1～6.5, Ag0.1～5, Ti0.1～4.2, Mn0.1～1.0, Nb0.1～3.0, each composition sum is 100.The method for preparing toothed porcelain alloy of the present invention is: each raw metal composition purity 〉=99.9% of selecting for use, after pressing the formula rate batching, put into neutrality or weakly alkaline oxide compound crucible, in a vacuum in the frequency induction furnace, 1500～1600 ℃ of temperature, the about 0.133Pa condition of vacuum tightness, fusing back 20～30 fen time of refining, pour in the ceramic die cooling back cutting, sandblast, polishing then.
Embodiment
Example 1: toothed porcelain alloy prescription (weight %): Ni73.9 Cr11.5 Mo3.8Al5.4 Ag2.5 Ti0.5 Mn0.3 Nb2.1
Example 2: toothed porcelain alloy prescription (weight %): Ni74.9 Cr11.5 Mo3.8Al5.4 Ag1.5 Ti0.5 Mn0.3 Nb2.1
Example 3: toothed porcelain alloy prescription (weight %): Ni75 Cr13.0 Mo6.0Al1.4 Ag3.0 Ti0.4 Mn0.2 Nb1.0
After the metal that example 1, example 2, example 3 are chosen is prepared burden by prescription, put into neutrality or weakly alkaline oxide compound crucible respectively, about 1550 ℃ of temperature, the about 0.133Pa condition of vacuum tightness, the fusing back 25 fen time of refining pours in the ceramic die then, the cutting of cooling back, toothed porcelain alloy is made in sandblast, polishing.
List the performance test result of porcelain alloy below:
The physicals of table 1 toothed porcelain alloy
| The performance title | U.S. VBV steel alloy | Example 1 | Example 2 | Example 3 |
| Tensile strength Mpa unit elongation, the % Vickers' hardness, Hv density, g/cm 3Thermal expansivity, * 10 -6(25 ℃～500 ℃) temperature of fusion, ℃ | 828 10 380 8.1 13.8 1162～1250 | 875 7.0 442 8.08 13.6 1306～1340 | 855 6.5 450 8.06 13.5 1300～1334 | 880 7.5 438 8.12 13.7 1308～1342 |
Table 1 presentation of results is pressed the regulation of ISO-6871-2Ni-base alloy standard, and intensity is not less than 500Mpa, and unit elongation is greater than 3%, and example 1,2,3 alloys all surpass ratio, compare with VBV steel alloy performance and meet or exceed its index.
Table 2 toothed porcelain alloy erosion resistance test-results
| Sample | Gross weight g before soaking | Soak back gross weight g | Weight difference g before and after soaking | Metal ion total amount in the soak solution, μ g/cm 3 | The soak solution color |
| Example 1 VBV steel alloy | 22.053489 20.925870 | 22.0521567 20.910358 | 13.33×10 -4 155.12×10 -4 | 44.36 779.07 | Colourless light green |
Table 2 presentation of results, the corrosion resistance of the toothed porcelain alloy of being invented are better than U.S. VBV steel alloy, and the VBV steel alloy contains Be, the alloy that its leaching ion ratio is invented exceeds 18 times, verified again to contain Be in the alloy, corrosion resistance reduces, the fierce conclusion that increases of the metal ion of separating out.
The good effect of invention: the experimental result of the alloy of preparing according to the toothed porcelain alloy of inventing and preparation method, alloy is take Ni-Cr-Mo as base, add an amount of Ag, Al, Ti, Mn, the formed alloy of Nb element is a kind of the nontoxic of Be that do not contain, physical property is good, is fit to the toothed porcelain alloy of application requirements. The vacuum melting of adopting and the preparation method of hot investment casting are feasible.
Claims (2)
1, a kind of toothed porcelain alloy, alloy are base with Ni-Cr-Mo, it is characterized in that its composition is weight %:Ni 73.5～76.0, and Cr 11.0～14.5, Mo 3.6～7.5, and Al 0.1～6.5, Ag0.1～5, and Ti 0.1～4.2, Mn 0.1～1.0, and Nb 0.1～3.0, and each composition sum is 100.
2, the method for preparing the described toothed porcelain alloy of claim 1, it is characterized in that: each raw metal composition purity 〉=99.9%, after pressing the formula rate batching, put into neutrality or weakly alkaline oxide compound crucible, in a vacuum in the frequency induction furnace, 1500～1600 ℃ of temperature, the about 0.133Pa condition of vacuum tightness, pours in the ceramic die at fusing back 20～30 fen time of refining, the cutting of cooling back, sandblast, polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410079578A CN100580116C (en) | 2004-11-25 | 2004-11-25 | Toothed porcelain alloy and production thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410079578A CN100580116C (en) | 2004-11-25 | 2004-11-25 | Toothed porcelain alloy and production thereof |
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| Publication Number | Publication Date |
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| CN1778978A true CN1778978A (en) | 2006-05-31 |
| CN100580116C CN100580116C (en) | 2010-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200410079578A Expired - Fee Related CN100580116C (en) | 2004-11-25 | 2004-11-25 | Toothed porcelain alloy and production thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978446A (en) * | 2012-11-07 | 2013-03-20 | 洛阳北苑特种陶瓷有限公司 | Cobalt-chromium-based alloy for porcelain teeth and preparation method thereof |
| CN102978445A (en) * | 2012-11-07 | 2013-03-20 | 洛阳北苑特种陶瓷有限公司 | Nickel-chromium-based alloy for porcelain teeth and preparation method thereof |
-
2004
- 2004-11-25 CN CN200410079578A patent/CN100580116C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978446A (en) * | 2012-11-07 | 2013-03-20 | 洛阳北苑特种陶瓷有限公司 | Cobalt-chromium-based alloy for porcelain teeth and preparation method thereof |
| CN102978445A (en) * | 2012-11-07 | 2013-03-20 | 洛阳北苑特种陶瓷有限公司 | Nickel-chromium-based alloy for porcelain teeth and preparation method thereof |
| CN102978445B (en) * | 2012-11-07 | 2016-12-21 | 洛阳北苑特种陶瓷有限公司 | A kind of for baking-ceramic tooth nickel chromio-based alloy and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN100580116C (en) | 2010-01-13 |
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Granted publication date: 20100113 Termination date: 20101125 |