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Mixture of two particulate phases used in the production of half-finished product that can be sintered at higher temperatures, process for producing such half-finished product that can be sintered at higher temperatures and process for producing meta

机译：用于可在较高温度下烧结的半成品的生产中使用的两种颗粒相的混合物，用于可在较高温度下烧结的半成品的生产方法以及用于制备间

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摘要

In the present invention, there is disclosed a mixture of two particulate phases which is intended for the production of a half-finished product that can be sintered at higher temperatures. According to the invention, the first phase contains particles that consist of a metal and/or a metal alloy and/or a metal compound, and the second phase contains particles from the group of the inorganic compounds which do not release any decomposition products at temperatures of more than 400 degC C that are interstitially soluble in the sintering metal phase and/or that react with said phase to stable compounds, whereby the inorganic compounds are selected from the group consisting of alkali metal or alkaline earth metal halides. The first phase contains temperature unstable hydrides of at least one of the metals forming the sintered alloy. The manufacturing process of such a half-finished product that can be sintered at higher temperatures and making use of the above-described mixture is characterized by homogeneously mixing a fist and a second phases of the mixture and subsequently the mixture is introduced into a mold that is heat and chemically stable at sintering temperature. Disclosed is also a process for producing metallic shaped bodies with open pores wherein the process comprises heating the half-finished product up to sintering of the first phase particles to a structure with open pores takes place wherein particles of the second phase are removed from a shaped body pores in the course of sintering process or after the sintering process is finished.

机译：在本发明中，公开了两种颗粒相的混合物，其用于生产可以在较高温度下烧结的半成品。根据本发明，第一相包含由金属和/或金属合金和/或金属化合物组成的颗粒，第二相包含选自无机化合物的颗粒，其在温度下不释放任何分解产物。熔点大于400℃的可溶于烧结金属相和/或与所述相反应生成稳定化合物的化合物，其中无机化合物选自碱金属或碱土金属卤化物。第一相包含形成烧结合金的金属中的至少一种的温度不稳定的氢化物。可以在较高温度下烧结并利用上述混合物的这种半成品的制造过程的特征在于，将第一相和第二相均匀地混合，然后将混合物引入模具中。在烧结温度下具有热稳定性和化学稳定性。还公开了一种制备具有开孔的金属成型体的方法，其中该方法包括加热半成品直至将第一相颗粒烧结成具有开孔的结构，其中将第二相的颗粒从成型体中除去。在烧结过程中或烧结过程完成后的孔洞。

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公开/公告号CZ297211B6

专利类型
公开/公告日2006-10-11

原文格式PDF
申请/专利权人 STRATEC MEDICAL AG;
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申请/专利号CZ20040200209
发明设计人 FEICHTINGER HEINRICH;
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申请日1999-09-14
分类号B22F3/11;A61L27/04;A61L27/30;B22F1;B22F1/02;B22F3/24;H01M4/02;H01M4/04;H01M4/36;H01M4/38;
国家 CZ
入库时间 2022-08-21 21:39:51

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