Abstract: The present invention improves the performance of a thermoelectric conversion material and a thermoelectric conversion module. A thermoelectric conversion material has a mother phase containing a chimney ladder type compound comprising a first element of groups 4 to 9 and a second element of groups 13 to 15 and an additive phase existing at a grain boundary of the mother phase, the mother phase contains a third element to change a lattice constant of the chimney ladder type compound, and the additive phase contains the second element.

Abstract: The present invention improves the performance of a thermoelectric conversion material and a thermoelectric conversion module. A thermoelectric conversion material has a mother phase containing a chimney ladder type compound comprising a first element of groups 4 to 9 and a second element of groups 13 to 15 and an additive phase existing at a grain boundary of the mother phase, the mother phase contains a third element to change a lattice constant of the chimney ladder type compound, and the additive phase contains the second element.

Abstract: A thermoelectric material having improved thermoelectric properties and a method for producing the thermoelectric material are provided. The thermoelectric material contains (Mn1-x-yVxFey)Si? (0.012?x?0.045, 0?y?0.06, 1.7???1.8) and is produced by homogenously melting the raw materials including Mn, Si, and V mixed to a composition of the thermoelectric material, and then solidifying the melted raw materials at a cooling rate of 13 K/hour or less.

Abstract: The present invention provides a thermoelectric conversion material including a half-Heusler alloy represented by the formula QR(L1-pZp), where Q is at least one element selected from group 5 elements, R is at least one element selected from cobalt, rhodium and iridium, L is at least one element selected from tin and germanium, Z is at least one element selected from indium and antimony, p is a numerical value that is equal to or greater than 0 and less than 0.5. A preferable example of the half-Heusler alloy is NbCo(Sn1-pSbp). The thermoelectric conversion material according to the present invention is n-type, and therefore, it is desired that the material is combined with a p-type thermoelectric conversion material to make a thermoelectric conversion element.

Abstract: A slide member includes a surface layer of a Pb alloy on a slide surface for a mating member, and the crystal form of the Pb alloy is formed such that the orientation index in a (h00) plane by Miller indices is in a range of 50 to 100%.

Abstract: A slide member includes a surface layer of a Pb alloy on a slide surface for a mating member, and the crystal form of the Pb alloy is formed such that the orientation index in a (h00) plane by Miller indices is in a range of 50 to 100%.