抄録
A homogeneous mixture of ultrafine MgO powder and SUS304 atomized powder was press-formed under a pressure of 500 kgf/cm2. The obtained green compacts were sintered at 1250°- 1430°C for2 hr in Ar. The composition along the cross section of the bodies sintered at 1300°- 1400°C was not uniform; the results of EPMA and XMDA showed that the Mg and MgO content decreased gradually from the center to the surface of the bodies. Possible mechanism for the appearance of the compositional gradience was discussed on the basis of the partial vaporization of MgO and chemical reaction associated with it.
