Effect of Additive Elements on Amorphization in M_<75>C_<25> (M=Fe, Co or Ni) and Fe_<80>N_<20> Systems by Mechanical Alloying

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概要

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• Mechanical alloying (MA) of elemental powder mixtures of the M_<75-x>A_xC_<25> system (at.%) (M=Fe, Co or Ni; A=Ti, V, Cr, Mn, Fe, Co or Ni) with x=0 and 20 is performed using a planetary ball mill. In the MA processing, the A additives with a negative value of the interaction parameter W^M_<AC>, such as Ti and V, markedly promote solid-state reactions in the MA products, leading to their amorphization, in contrast to the additives with a positive W^M_<AC> value such as Co and Ni in Fe-C systems; the parameter W^M_<AC> represents the difference in bonding energy of A-C atomic pairs (E_<AC>) and M-C pairs (E_<MC>) in the ternary M-A-C solution, i.e. W^M_<AC>=E_<AC>-E_<MC>. Such effects of additives seen for M-C materials are also true of experimental results of MA of Fe_<64>A_<16>N_<20> (A=Cr or Nb) materials with a negative interaction parameter W^<Fe>_<AN>.

• 社団法人応用物理学会の論文
• 1997-04-15

著者

• Omuro Keisuke

  Department Of Mechanical Engineering College Of Industrial Technology

関連論文

• Synthesis of Amorphous Powders of Ni-Si and Co-Si Alloys by Mechanical Alloying
• Preparation of Fe-Ni-Based Metal-Metalloid Amorphous Alloys by Mechanical Alloying and Mechanical Grinding Methods
• Effect of Additive Elements on Amorphization in M_C_ (M=Fe, Co or Ni) and Fe_N_ Systems by Mechanical Alloying

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