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铂、金和锇等由于它们的化学稳定性极高,在严重的酸蚀条件下作用也很微弱,有的甚至不起作用。就其抗氧化性能来说,铂、金和锇等在空气中加热,实际上不会发生氧化。对于它们的一些合金,例如铂-铱,其抗氧化性能很高,因而,在这些金属及合金的金相试验中,化学、电解、热染等法用于组织显示,就会遇到困难。我们遵照毛主席关于“在生产斗争和科学实验范围内,人类总是不断发展的,自然界也总是不断发展的,永远不会停止在一个水平上。因此,人类总得不断地总结经验,有所发现,有所发明,有所创造,有所前进。”的教导,经过几年来的摸索,对铂合金、金合金和锇合金的组织显示,得到了一些初步的经验,使用效果是满意的。
Platinum, gold and osmium due to their high chemical stability, the role of severe erosion conditions are also very weak, and some even do not work. In terms of its antioxidant properties, platinum, gold and osmium are heated in the air without actually oxidizing. For some of their alloys, such as platinum-iridium, their oxidation resistance is high, and therefore, in the metallographic tests of these metals and alloys, chemical, electrolytic, thermal dyeing and the like are used for the display of the tissues, and thus difficulties are encountered. We follow Chairman Mao’s principle that mankind always develops continuously within the scope of the struggle for production and scientific experimentation and that nature will always develop ceaselessly and will never stop at a level. Therefore, mankind always has to sum up his experience with Found, invented, created, advanced. "After several years of exploration, the organization of platinum alloys, gold alloys and osmium alloys has shown some initial experience and the results are satisfactory of.