ʻO ka uea Pt-iridium kahi mea hoʻohui pālua i hoʻokumu ʻia i ka platinum me ka selenium. He hopena paʻa mau ia i ka wela kiʻekiʻe. Ke hoʻomaha mālie a hiki i 975~700 ºC, hiki mai ka decomposition paʻa paʻa, akā hele mālie ke kaʻina equilibrium. Hiki iā ia ke hoʻomaikaʻi maikaʻi i ke kūpaʻa corrosion o ka platinum ma muli o kāna volatilization maʻalahi a me ka oxidation. Aia nā Ptlr10, Ptlr20, Ptlr25, Ptlr30 a me nā mea hoʻohui ʻē aʻe, me ka paʻakikī kiʻekiʻe a me ka helu heheʻe kiʻekiʻe, ke kūpaʻa corrosion kiʻekiʻe a me ke kūpaʻa haʻahaʻa haʻahaʻa, ʻo 58% o ka platinum maʻemaʻe ka nui o ka corrosion, a ʻo ke kaumaha o ka oxidation he 2.8mg / g. . He mea pili uila maʻamau. Hoʻohana ʻia no ka hoʻopili ʻana i ke ahi kiʻekiʻe o nā aero-engines, nā pilina uila o nā relays me ka naʻau kiʻekiʻe a me nā kaʻa Wei; nā potentiometers a me nā pulupulu apo conductive o nā mea ʻike pololei e like me ka mokulele, missiles a me nā gyroscopes