摘要:
Methods of producing a photosensitive ceramic composition and a multi-layer substrate using it. The ceramic multi-layer substrate and the production method therefor are applicable to circuit materials and components for high-frequency radio-use ceramic multi-layer substrate. A photosensitive ceramic composition comprising inorganic powder and a photosensitive organic component as essential components, characterized in that at least part of the surface of the inorganic powder is formed with a portion consisting of an inorganic material lower in refractive index than the inner layer portion of the inorganic power.
摘要:
Provided are processes for producing articles containing low sinterability titanium dioxide pigment. A low sinterability titanium oxide (powder) is desirable as an ingredient in moisture resistant printed circuit boards, ceramic substrates with high dimensional stability and ceramic layers which resist sintering with adjacent layers. According to the processes disclosed herein, low sinterability titanium dioxide can be produced by introducing silicon during the oxidation of titanium chloride in the chloride process of titanium dioxide production.
摘要:
A method of alleviating edge curling when laminated structures comprising layers of green material having different shrinkage rates are sintered comprises applying to a face (18) of edges (14) the first layer (10) having the higher shrinkage rate green sinterable material, opposite to the second layer (12) having the lower shrinkage rate green sinterable material, an edge strip (16) of a green sinterable material also having a shrinkage rate lower than the first layer, and then firing the laminated structure. The edge strip may be partly or, advantageously, wholly embedded in the first layer. The sinterable materials of the second layer and edge strip may be the same or similar. The invention is particularly applicable to solid oxide fuel cell sub-structures in which the first layer is the anode layer and the second layer is the electrolyte layer.
摘要:
A metal-ceramic composite body with a protruding portion on a ceramic member (l) fitted into a recessed portion of a metallic member is given high joint strength and reliability by fitting the protruding portion into a recessed portion of an intermediate member (2) of low thermal expansion coefficient and joining the intermediate member to a main metallic member (3). The difference between the inner diameter of the recessed portion of the intermediate member and the outer diameter of the protruding portion of the ceramic member is not less than 0.2% of the outer diameter of the protruding portion, when the protruding portion is pulled out from the concave portion.
摘要:
Methods of producing a photosensitive ceramic composition and a multi-layer substrate using it. The ceramic multi-layer substrate and the production method therefor are applicable to circuit materials and components for high-frequency radio-use ceramic multi-layer substrate. A photosensitive ceramic composition comprising inorganic powder and a photosensitive organic component as essential components, characterized in that at least part of the surface of the inorganic powder is formed with a portion consisting of an inorganic material lower in refractive index than the inner layer portion of the inorganic power.
摘要:
The present invention provides a multilayer ceramic composition comprising at least one layer of dielectric material M 1 and at least one layer of dielectric material M 2 , wherein passive components are buried in both layers of dielectric material M 1 and M 2 that prevent each other from shrinkage in the X and Y dimensions during firing. Each layer of the multilayer ceramic composition according to the invention can be used as a substrate for burying the passive component and has the ability to prevent other layer with different dielectric constant from shrinkage. Hence, the multilayer ceramic composition has the advantages of smaller size and a better circuit precision.
摘要:
A method of alleviating edge curling when laminated structures comprising layers of green material having different shrinkage rates are sintered comprises applying to a face (18) of edges (14) the first layer (10) having the higher shrinkage rate green sinterable material, opposite to the second layer (12) having the lower shrinkage rate green sinterable material, an edge strip (16) of a green sinterable material also having a shrinkage rate lower than the first layer, and then firing the laminated structure. The edge strip may be partly or, advantageously, wholly embedded in the first layer. The sinterable materials of the second layer and edge strip may be the same or similar. The invention is particularly applicable to solid oxide fuel cell sub-structures in which the first layer is the anode layer and the second layer is the electrolyte layer.
摘要:
A ceramic-metal composite body is formed by fitting a projection (1a) formed on a ceramic member (1) into a recess (2a) or a through hole formed in a metallic member (2). To reduce stress concentration on the ceramic member (1), a groove (3) is provided substantially all around the outer periphery of the metallic member at a location corresponding to the end (4) of the fitting of the metallic member and the projection (1a). The difference between the diameter of a bottom of the groove (3) and the outer diameter of the projection (1a) is 0.05 to 0.8 times the difference between the outer diameter of the metallic member (2) and the outer diameter of the projection (1a).
摘要:
Some embodiments disclosed herein include a ceramic body including a first region and a second region. The first region may include a host material and first concentration of a dopant that is effective to produce luminescence. The second region may include the host material and second concentration of the dopant. In some embodiments, the first region has an average grain size that is larger than an average grain of the second region. The ceramic body may, in some embodiments, exhibit superior internal quantum efficiency (IQE). Some embodiments disclosed herein include methods for the making and using the ceramic bodies disclosed herein. Also, some embodiments disclosed herein lighting apparatuses including the ceramic bodies disclosed herein.