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The ternary boride has excellent mechanical properties , wear resistance , corrosion resistance and high temperature resistance , this material has a very wide range of uses in industrial and agricultural production , plays a very important role in the national economy . Ternary Boride cermets research such as Japan , the United States is only a few countries , and focus on research its sintering properties , its high temperature properties , corrosion and applied research is not yet ripe . In this paper, vacuum liquid phase sintering technology prepared Mo of FeB 2 cermet by XRD and SEM analysis of the composition and structure of the metal-ceramic , spectroscopy analysis of sticky the chemical composition of the end phase and hard phase . The results show that : Mo 2 FeB 2 -based cermet by Mo 2 of FeB 2 ceramic hard phase and α -Fe binder phase composition of alloy elements of Ni into the bonded phase portion exist in the form of simple substance of Ni , forming part of Fe a Ni-Fe alloy . Alloying elements Cr is also entered into the binder phase to the hard phase . Mo 2 FeB 2 cermets resistance to high temperature oxidation resistance , studies have shown that , at 750 ° C high temperature conditions , the cermet surface MoO 3 , Fe 2 O 3 , NiO and Cr 2 O 3 < / sub> oxide . Only add the alloying elements Ni , cermet oxidation weight gain in relation to time to follow the classic parabola kinetics equation , i.e. found blunt oxidation regulation , and as the Ni content is increased from 6% to 10%, the oxidation rate is increased gradually high temperature oxidation resistance worse. The Cr metal element is added , the oxidation weight gain is not obvious , but the oxidation rate slightly decreases as the Cr content is changed from 8% to 12% , . Studied Mo 2 FeB 2 based metal ceramic corrosion resistance, showed good corrosion resistance in 5% sulfuric acid , nitric acid - hydrofluoric acid in corrosion serious in the material surface covered with a layer of red copper sulfate - copper sulfate solution as a result of the substitution reaction of iron and copper sulfate enhanced corrosion resistance , so that the separation of surface etching solution .
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