Os2B3 hard material and preparation and application thereof
A technology for hard materials and raw materials, which is applied to Os2B3 hard materials and their preparation and application fields, can solve problems such as affecting structure and mechanical properties, and achieve the effects of high hardness, simple and easy process, and high chemical stability.
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[0036] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.
[0037] A high-energy ball mill model 8000M from SPEX, USA is used for powder synthesis. First, in a glove box filled with argon, mix high-purity osmium powder (Os) and boron powder (B) at a stoichiometric ratio of 1:2. There are a total of six tungsten carbide grinding balls with a size of 11.20mm, and the mass ratio of the balls to the mixed powder is 4:1. Fix the tungsten carbide ball mill jar with powder and grinding balls on the high-energy ball mill. The total time of ball milling is 40h, and the ball milling is stopped for 20 minutes every 1h (to prevent the engine from overheating).
[0038] figure 1 XRD patterns of different milling periods. by figure 1 (a) It can be seen that with the extension of ball milling time, the peak of osmium (Os) continuously weakens and the peak shape becomes wider. OsB is...
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