Development of High Strength Mo2NiB2 Ternary Boride Base Cermets Produced by Reaction Boronizing Sintering

Kenichi Takagi; Yuji Yamasaki; Koro Hirata

doi:10.4028/www.scientific.net/MSF.539-543.803

Paper Titles

SLEEM Study of MgAl₂O₄ at Interface betweeen Al₂O₃ and Matrix in Al₂O₃/Al Alloy Composite Materials
p.779

Reducing Threshold Pressure for Infiltration of Al-12Si Alloys into Carbon Particle Compacts by Placing a Thin Layer of Sn at the Infiltration Front
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Processing Ti-Al-Nb Composite Sheet Materials Using Cold Roll Bonding and Reaction Annealing
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Evaluation of Wear Behavior of Feldspar Particles Reinforced Copper Alloy Composite Materials
p.797

Development of High Strength Mo₂NiB₂ Ternary Boride Base Cermets Produced by Reaction Boronizing Sintering
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Combustion Synthesis of TiB₂ Particle Dispersed Metal Matrix Composites
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Plasticity Mechanisms in Multi-Scale Copper-Based Nanocomposite Wires
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Phase Transformation and its Effect on Dry Sliding Wear of Electro-Pressure Sintered Cobalt and Cobalt-Base Composites
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Effect of Milling Condition on Properties and Microstructure of Copper Reinforced with 1% vol. NbC
p.826

HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Development of High Strength Mo2NiB2 Ternary...

Development of High Strength Mo₂NiB₂ Ternary Boride Base Cermets Produced by Reaction Boronizing Sintering

Abstract:

The effects of V substitution for Cr to the sintering behavior of Cr containing Mo2NiB2 ternary boride base cermets and Mn addition to the mechanical properties and microstructure of the Cr and V containing cermets were investigated by using Ni-5.0B-51.0Mo-(17.5-x)Cr-xV (mass%) and Ni-5.0B-51.0Mo-12.5Cr-5.0V-(0-1.5)Mn (mass%) model cermets. 10mass%V substitution for Cr in the Cr containing cermets markedly improved transverse rupture strength and hardness from 2.27 to 2.94GPa and from 85.3 to 87.2RA respectively and refined the microstructure by retarding the progress of sintering especially at liquid phase sintering stage. Small amount of Mn addition to the Cr and V containing Mo2NiB2 base cermets significantly improved the sinterability and increased the mechanical properties of the cermets.