Accession Number : AD0901949

Title :   Exploratory Development on Formation of High Strength, High Modulus Boron Nitride Continuous Filament Yarns.

Descriptive Note : Final technical management rept. 1 Mar 71-29 Feb 72,

Corporate Author : CARBORUNDUM CO NIAGARA FALLS NY

Personal Author(s) : Lin, Ruey Yuan ; Economy, James ; Murty, Hari N.

Report Date : JUN 1972

Pagination or Media Count : 58

Abstract : A process to produce the high strength, high modulus continuous boron nitride multifilament was developed. The process consists of three fundamental steps: fiber drawing, nitriding and hot stretching. The important process parameters in each step were studied and optimized. The highest average tensile strength and modulus observed thus far are 171 thousand psi and 40 million psi respectively. A complete line of fiber characterization techniques were established and the correlation between fiber structure and properties was also made. (Author, modified-PL)

Descriptors :   (*BORON COMPOUNDS, NITRIDES), (*SYNTHETIC FIBERS, BORON COMPOUNDS), REINFORCING MATERIALS, HOT WORKING, STRUCTURAL PROPERTIES, PROCESSING, MODULUS OF ELASTICITY, TENSILE PROPERTIES, STRETCH FORMING, MECHANICAL PROPERTIES, X RAY DIFFRACTION, COMPOSITE MATERIALS, CRYSTAL SUBSTRUCTURE, MICROSTRUCTURE, MANUFACTURING, CASE HARDENING, EPOXY RESINS.

Subject Categories : Inorganic Chemistry
      Textiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE