CN204668434U

CN204668434U - For the ceramic dielectric window of microwave device

Info

Publication number: CN204668434U
Application number: CN201520372605.3U
Authority: CN
Inventors: 尚晓博; 赵童刚; 石育佳; 王伟
Original assignee: SHANXI BAOGUANG CERAMIC SCIENCE TECHNOLOGY Co Ltd
Current assignee: SHAANXI BAOGUANG CERAMIC SCIENCE TECHNOLOGY CO.,LTD.
Priority date: 2015-06-02
Filing date: 2015-06-02
Publication date: 2015-09-23
Anticipated expiration: 2025-06-02

Abstract

A kind of ceramic dielectric window for microwave device is provided, there is body, uniformly on the end face I of described body be shaped with V-type groove, its end face II is plane, the external diameter of above-mentioned end face I is less than the external diameter of end face II and both external diameter differences form positioning table, metallizing layer on the excircle of described body, described metal layer is coated with nickel dam.The utility model both effectively ensure that assembling requirement of strength when assembling with microwave output device, had again stronger wave penetrate capability, have lightweight, broadband, power capacity are high, assembling is simple, good insulation preformance, high temperature resistant and thermally-stabilised good characteristic.

Description

For the ceramic dielectric window of microwave device

Technical field

The utility model relates to a kind of ceramic dielectric window for microwave device.

Background technology

Ceramic dielectric window is the output block in high-power microwave assembly, and its effect realizes isolation in atmosphere outside and microwave device between high vacuum state and Energy Transfer.Usually it is required it is that in free space and ceramic dielectric window, transmit the impedance mismatching caused little as far as possible, there is wide working band and sufficiently high power capacity.But, in the development process of output window, due to the existence of window dielectric loss factor, when microwave by producing high-frequency dielectric loss during output window in window, the power of microwave is higher, and the heat of generation is more, and it is too high that this will cause exporting window temperature, thermal stress is excessive, when the thermal stress of window exceeds its ability to bear, window will break, and causes vacuum failure in pipe, be the large flat bottleneck that microwave device develops to high power, be therefore necessary to propose to improve.

Utility model content

The technical problem that the utility model solves: a kind of ceramic dielectric window for microwave device is provided, this ceramic dielectric window both effectively ensure that assembling requirement of strength when assembling with microwave output device, have again stronger wave penetrate capability, have lightweight, broadband, power capacity are high, assembling is simple, good insulation preformance, high temperature resistant and thermally-stabilised good characteristic.

The technical solution adopted in the utility model: for the ceramic dielectric window of microwave device, there is body, uniformly on the end face I of described body be shaped with V-type groove, its end face II is plane, the external diameter of above-mentioned end face I is less than the external diameter of end face II and both external diameter differences form positioning table, metallizing layer on the excircle of described body, described metal layer is coated with nickel dam.

Wherein, be parallel to each other between described V-type groove and run through end face I.

Further, described metal layer is molybdenum manganese metal layer, and its thickness is 15 ~ 30 μm; The thickness of described nickel dam is 2.5 ~ 6 μm.

Further, the cross section of described V-type groove is isosceles triangle, and the angle of V-type groove two hypotenuse is 75 ~ 80 °, and the degree of depth of V-type groove is 1.2 ~ 1.5mm.

Further, described positioning table and end face I joining place are shaped with the chamfering I of 1mm × 45 °, and positioning table end is shaped with the chamfering II of 0.5mm × 45 °, and described end face II end is shaped with the chamfering III of 1mm × 45 °, described chamfering III metallizing layer, described metal layer is coated with nickel dam.

Further, the quantity of described V-type groove is 120 ~ 130, and described positioning table width is 3 ~ 5mm, and the external diameter of described body is no less than 400mm and body thickness is 8mm.

The utility model compared with prior art has following advantage:

1, chamfering I and chamfering II can prevent ceramic dielectric window under high pressure producing point discharge;

2, fill out when chamfering III is convenient to ceramic dielectric window and other part soldering and put solder;

3, positioning table be used for and other Assembly of the parts time locate, the summary of assembling and the concentricity of whole build-up member can be ensured;

4, the thickness of body is 8mm, both effectively ensure that assembling requirement of strength when assembling with microwave output device, has had again stronger wave penetrate capability;

5, the utility model have lightweight, bandwidth, power capacity are high, assembling is simple, good insulation preformance, high temperature resistant and thermally-stabilised good characteristic.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the A portion enlarged drawing of Fig. 1;

Fig. 3 is the B portion enlarged drawing of Fig. 1;

Fig. 4 is the vertical view of Fig. 3.

Embodiment

Below in conjunction with accompanying drawing 1-4, a kind of embodiment of the present utility model is described.

For the ceramic dielectric window of microwave device, have body 5, the external diameter of described body 5 is no less than 400mm and body 5 thickness is 8mm, both effectively ensure that assembling requirement of strength when assembling with microwave output device, has had again stronger wave penetrate capability; Uniformly on the end face I 9 of described body 5 be shaped with V-type groove 1, its end face II 10 is plane, concrete, be parallel to each other between described V-type groove 1 and run through end face I 9, the cross section of described V-type groove 1 is isosceles triangle, and the angle of V-type groove 1 liang of hypotenuse is 75 ~ 80 °, and the degree of depth of described V-type groove 1 is 1.2 ~ 1.5mm, the quantity of described V-type groove 1 is 120 ~ 130, is wherein in middle V-type groove 1 and overlaps with the diameter of ceramic dielectric window; The external diameter of described end face I 9 is less than the external diameter of end face II 10 and both external diameter differences form positioning table 3, and described positioning table 3 width is 3 ~ 5mm, and positioning table 3 can ensure the concentricity of summary and the whole build-up member assembled; Metallizing layer 6 on the excircle of described body 5, and sinter under reducing atmosphere, make metal layer 6 and body 5 strong bonded, described metal layer 6 is molybdenum manganese metal layer, and its thickness is 15 ~ 30 μm; Described metal layer 6 is coated with nickel dam 7, and the thickness of described nickel dam 7 is 2.5 ~ 6 μm.

Described positioning table 3 and end face I 9 joining place are shaped with the chamfering I 2 of 1mm × 45 °, positioning table 3 end is shaped with the chamfering II 4 of 0.5mm × 45 °, wherein, it is inner that chamfering I 2 and chamfering II 4 are assemblied in microwave output device, and chamfering I 2 and chamfering II 4 effectively prevent ceramic dielectric window under high pressure producing point discharge, described end face II 10 end is shaped with the chamfering III 8 of 1mm × 45 °, fill out when chamfering III 8 is convenient to ceramic dielectric window and other part soldering and put solder, described chamfering III 8 metallizing layer 6, described metal layer 6 is coated with nickel dam 7.

The utility model adopts isostatic pressing process in manufacturing process, first ceramic raw material is after batching, ball milling, wet method deironing, granulation, granulation material is loaded in mould, press ceramic blank in equal pressing equipment, and then the demoulding, ceramic blank after the demoulding is processed into solid round shape green compact, body 5 is burnt till by high temperature drawer kiln, again by numerically control grinder processing V-shaped groove 1, positioning table 3, chamfering I 2, chamfering II 4 and chamfering III 8 on the end face I 9 of body 5, and process end face II 10 and ceramic external diameter, finally complete the fine finishining of ceramic dielectric window; Metal layer 6 adopts molybdenum manganese method technique to carry out ceramic metallization to body 5, first at the external diameter surface coating layer of metal paste of body 5, then sinter in vertical hydrogen stove, thus form metal layer 6, then the body 5 through being coated with metal layer 6 electroplates one deck nickel in aqueduct, form nickel dam 7, finally complete processing of the present utility model; The utility model have lightweight, broadband, power capacity are high, assembling is simple, good insulation preformance, high temperature resistant and thermally-stabilised good characteristic.

Above-described embodiment, just preferred embodiment of the present utility model, is not used for limiting the utility model practical range, therefore all equivalence changes done with content described in the utility model claim, all should be included within the utility model right.

Claims

1. for the ceramic dielectric window of microwave device, there is body (5), it is characterized in that: the end face I (9) of described body (5) is above uniform is shaped with V-type groove (1), its end face II (10) is plane, the external diameter of above-mentioned end face I (9) is less than the external diameter of end face II (10) and both external diameter differences form positioning table (3), metallizing layer (6) on the excircle of described body (5), described metal layer (6) is coated with nickel dam (7).

2. the ceramic dielectric window for microwave device according to claim 1, is characterized in that: be parallel to each other between described V-type groove (1) and run through end face I (9).

3. the ceramic dielectric window for microwave device according to claim 1 and 2, is characterized in that: described metal layer (6) is molybdenum manganese metal layer, and its thickness is 15 ~ 30 μm; The thickness of described nickel dam (7) is 2.5 ~ 6 μm.

4. the ceramic dielectric window for microwave device according to claim 3, it is characterized in that: the cross section of described V-type groove (1) is isosceles triangle, and the angle of V-type groove (1) two hypotenuse is 75 ~ 80 °, the degree of depth of V-type groove (1) is 1.2 ~ 1.5mm.

5. the ceramic dielectric window for microwave device according to claim 4, it is characterized in that: described positioning table (3) and end face I (9) joining place are shaped with the chamfering I (2) of 1mm × 45 °, positioning table (3) end is shaped with the chamfering II (4) of 0.5mm × 45 °, described end face II (10) end is shaped with the chamfering III (8) of 1mm × 45 °, described chamfering III (8) metallizing layer (6), described metal layer (6) is coated with nickel dam (7).

6. the ceramic dielectric window for microwave device according to claim 5, it is characterized in that: the quantity of described V-type groove (1) is 120 ~ 130, described positioning table (3) width is 3 ~ 5mm, and the external diameter of described body (5) is no less than 400mm and body (5) thickness is 8mm.