Journal of the American Ceramic Society, Vol.87, No.2, 314-316, 2004
Fiber strength retention of lanthanum- and cerium monazite-coated Nextel (TM) 720
Nextel(TM) 720 fibers were coated with LaPO4 and CePO4 monazite. The coatings were applied using washed and unwashed rhabdophane sols derived from La(NO3)(3)/(NH4)(2)HPO4 and a washed sol derived from Ce(NO3)(3)/H3PO4. The coatings were cured in-line at 900degrees-1300degreesC. Multiple coatings were also applied. Fiber strength was retained after coating with washed sols, but not with unwashed sols. These results are consistent with earlier work on LaPO4 monazite fiber coatings derived from La(NO3)(3)/H3PO4.