STP1201

    Silicon Nitride Tensile Strength Database from Ceramic Technology Program PRocessing for Reliability Project

    Published: Jan 1994


      Format Pages Price  
    PDF (420K) 16 $25   ADD TO CART
    Complete Source PDF (7.5M) 16 $65   ADD TO CART


    Abstract

    Tensile strength data generated in Norton's Ceramic Technology Program (CTP) Processing for Reliability Project is presented for a hot isostatically pressed (HIP'ed) 4 wt% yttria-silicon nitride (designation NCX-5102). This database represents the result of an extensive multi-variable experimental matrix designed to identify an optimized process directed at eliminating or minimizing critical flaws. The strength data follow from room temperature fast fracture tests of net-shaped-formed, pressure cast cylindrical buttonhead tensile bars. Results of over one hundred tensile tests coupled with detailed fractography are summarized using Weibull statistics including competing risk analyses. Specimen fabrication and mechanical testing issues (e.g. machining, strain gaging) which were addressed to ensure the integrity of the strength database will also be discussed.

    Keywords:

    silicon nitride, reliability, tensile strength, Weibull analysis, competing risk, machining, strain gaging


    Author Information:

    Foley, MR
    Senior Research Engineer, Senior Research Associate, Senior Research Engineer, Research Group Leader, Saint Gobain/Norton Industrial Ceramics Corporation, Northboro Research and Development Center, Northboro, MA

    Pujari, VK
    Senior Research Engineer, Senior Research Associate, Senior Research Engineer, Research Group Leader, Saint Gobain/Norton Industrial Ceramics Corporation, Northboro Research and Development Center, Northboro, MA

    Sales, LC
    Senior Research Engineer, Senior Research Associate, Senior Research Engineer, Research Group Leader, Saint Gobain/Norton Industrial Ceramics Corporation, Northboro Research and Development Center, Northboro, MA

    Tracey, DM
    Senior Research Engineer, Senior Research Associate, Senior Research Engineer, Research Group Leader, Saint Gobain/Norton Industrial Ceramics Corporation, Northboro Research and Development Center, Northboro, MA


    Paper ID: STP12772S

    Committee/Subcommittee: C28.02

    DOI: 10.1520/STP12772S


    CrossRef ASTM International is a member of CrossRef.