However, {HEAD ~ TaN} will give rise to tensile stresses in {TAIL ~ the alumina matrix} due to the thermal expansion mismatch 
However , { HEAD ~ TaN } will give rise to tensile stresses in { TAIL ~ the alumina matrix } due to the thermal expansion mismatch
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH