STUDY ON THERMAL FATIGUE OF NI BASE ALLOY CHROMIUM CARBIDE COMPOSITE COATING

金属学报(英文版), 1999, 12(4): 500-503.

STUDY ON THERMAL FATIGUE OF NI BASE ALLOY CHROMIUM CARBIDE COMPOSITE COATING

H.C.Lin1) , J.Y.Wang1) , Q.Z.Yang1) , L.J.Guo2) and D.X.Lan2) 1)Departmentof Mechanical Engineering , QingDao Institute of Architecture and Engineering , Qingdao 266033 , China 2)Institute of Machinery , Qingdao266000 , China

Keywords： compositecoating , null , null

Thermalfatiguebehaviorsof Nibased alloychromium carbidecompositecoating madeby a vacu um fusionsintering method are discussed. Resultsshowedthatthermalfatiguebehaviorisassoci ated with cyclic uppertemperature and coating thickness. Asthe thickness of coating decreases,thethermalfatigueresistanceincreases. Thethermalfatigueresistancecuts down with thether malcyclic uppertemperature rising. Thecrack growth rate decreases with theincreasein cyclicnumber untilcrackarrests. Thetractofthermalfatiguecrackcracksalongtheinterfacesof phas es. Thecompositecoating possesseshigheroxidation resistance.

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STUDY ON THERMAL FATIGUE OF NI BASE ALLOY CHROMIUM CARBIDE COMPOSITE COATING

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