Alumina, the matrix material, has {HEAD ~ a thermal expansion coefficient} in the order of {TAIL ~ 8 10 6 K} 1  
Alumina , the matrix material , has { HEAD ~ a thermal expansion coefficient } in the order of { TAIL ~ 8 10 6 K } 1
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH