摘要:
According to an aspect of the present invention, there is provided a sintered electroconductive oxide containing a perovskite phase of perovskite-type crystal structure represented by the composition formula: M1 a M2 b M3 c Al d Cr e O f where M1 is at least one of elements of group 3A other than La; M2 is at least one of elements of group 2A; M3 is at least one of elements of groups 4A, 5A, 6A, 7A and 8 other than Cr; and a, b, c, d, e and f satisfy the following conditional expressions: 0.600 ≤ a ≤ 1.000 ; 0 ≤ b ≤ 0.400 ; 0.150 ≤ c 0.600 ; 0.400 ≤ d ≤ 0.800 ; 0 e ≤ 0.050 ; 0 e / c + e ≤ 0.18 ; and 2.80 ≤ f ≤ 3.30. With the use of this conductive oxide sintered body, it becomes possible to carry out proper temperature measurements over the temperature range from a low temperature of -40°C to a high temperature of 900°C or higher.
摘要:
A lead-free piezoelectric ceramic composition includes a first crystal phase made of an alkali niobate/tantalate type perovskite oxide having piezoelectric properties, and a second crystal phase made of an M-Ti-O spinel compound (where the element M is a monovalent to quadrivalent element).
摘要:
Provided is an electric conductor which is formed from a sintered oxide compact that has high electric conductivity and a small B-value (temperature coefficient). The sintered oxide compact is represented by a composition formula: REaCobNicOx (where RE represents a rare earth element, a + b + c = 1, and 1.3 ≤ x ≤ 1.7); the sintered oxide compact comprises a perovskite phase with a perovskite-type oxide crystal structure; a, b, and c satisfy the following relationships: 0.474 ≤ a ≤ 0.524 , 0.2000 ≤ b ≤ 0.375 , and 0.125 ≤ c ≤ 0.300 ; and the sintered oxide compact further comprises RE 4 Co 3 O 10 or RE 4 Ni 3 O 10 in addition to the perovskite phase.
摘要翻译:提供一种电导体,其由具有高导电性和小B值(温度系数)的烧结氧化物压块形成。 烧结氧化物粉末由以下组成式表示:REaCobNicOx(其中RE表示稀土元素,a + b + c = 1和1.3‰×‰¤1.7); 烧结氧化物烧结体包括具有钙钛矿型氧化物晶体结构的钙钛矿相; a,b,c满足以下关系:0.474‰¤‰¤0.524,0.2000‰¤‰0.375,0.125‰¤‰0.300; 并且烧结氧化物压块除了钙钛矿相以外还包含RE 4 Co 3 O 10或RE 4 Ni 3 O 10。
摘要:
A lead-free piezoelectric ceramic composition mainly includes a first crystal phase (KNN phase) and a second crystal phase (NTK phase). In the first crystal phase (KNN phase), a plurality of crystal grains formed of an alkali niobate/tantalate perovskite oxide having piezoelectric characteristics is bound to each other in a deposited state. The second crystal phase (NTK phase) is formed of a compound containing titanium (Ti) and fills spaces between the crystal grains in the first crystal phase.
摘要:
A spark plug 100, comprising a center electrode 3 which is extended in an axial direction, a cylindrical insulator 2 which holds the center electrode 3, and a cylindrical main metal fitting 1 which has a ground electrode 10 at a tip end portion and a tool engagement portion 8 for mounting on an engine, wherein the main metal fitting 1 has a part of a rear end side from the tool engagement portion 8 as a metal fitting-side fitting portion 9 and holds the insulator 2 in a tightly fitted state in a radial direction by the metal fitting-side fitting portion 9.