Titanium single crystal with target crystal plane surface and preparation method thereof
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A single crystal and crystal face technology, applied in the field of crystals, can solve the problem of inability to obtain titanium single crystals, and achieve the effect of high preparation efficiency and wide application range.
Active Publication Date: 2020-04-21
TSINGHUA UNIV
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[0004] Based on this, it is necessary to provide a method for preparing a titanium single crystal with a target crystal plane surface and a titanium single crystal with a target crystal plane surface to solve the problem that the traditional process cannot obtain a titanium single crystal with the desired target crystal plane.
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preparation example Construction
[0040] An embodiment of the present invention provides a method for preparing a titanium single crystal having a target crystal plane surface, using a rotating and transforming clamping device, and including:
[0041] S100, provide a titanium single crystal sample with a grain size greater than 5mm;
[0042] S200, mark on the titanium single crystal sample, and establish a sample coordinate system of the titanium single crystal sample, defined as Omnl;
[0043] S300, establish the crystal coordinate system of the target crystal plane in the titanium single crystal sample on the sample coordinate system according to the right-hand rule, and obtain the Euler angle (α, β,0);
[0044]S400. Clamp the titanium single crystal sample on the rotation conversion clamping device, the rotation conversion clamping device includes a first rotation element, a second rotation element and a clamping element, and the second rotation element is set On the first rotating element, the clamping e...
Embodiment
[0086] see figure 2 , the rotation conversion clamping device includes a right-angle fixed block 500 , a first rotation element 100 , a right-angle connection block 400 , a second rotation element 200 and a clamping element 300 connected in sequence. It is stipulated that the coordinate system of the rotation transformation clamping device is OXYZ.
[0087] The right-angle fixed block 500 is the base of the rotation transformation clamping device, and is used to be connected with the workbench of the wire cutting machine with the metal cutting wire, and the bottom surface of the right angle fixed block 500 is the XY plane of the rotation transformation clamping device.
[0088] The first rotating element 100 includes a first base 140 , a first rotating platform 120 and a first rotating shaft (not shown) perpendicular to the first base 140 and the first rotating platform 120 and disposed therebetween. The second rotating element 200 includes a second base 240 , a second rotat...
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Abstract
The invention discloses a preparation method of a titanium single crystal with a target crystal plane surface. The preparation method adopts a rotating change clamping device and comprises the steps that a titanium single crystal sample with crystal grains with grain size larger than 5mm is provided; the titanium single crystal sample is marked, a sample coordinate system of the titanium single crystal sample is established and defined as Omnl; a crystal coordinate system of a target crystal plane in the titanium single crystal sample is established, and the euler angle (alpha, beta, 0) of thetarget crystal plane in the sample coordinate system is obtained; the titanium single crystal sample is clamped on the rotating change clamping device; according to the mark made on the titanium single crystal sample, a first rotating element and a second rotating element are rotated to make the sample coordinate system Omnl coincide with the coordinate system OXYZ of the rotating change clampingdevice so as to achieve zero setting and fixation of the coordinate system OXYZ; the second rotating element is made to drive a clamping element to rotate by the angle alpha around a second axis; thefirst rotating element drives the second rotating element and the clamping element to rotate by the angle beta around a first axis; and a cutting element cuts the titanium single crystal sample in acutting direction parallel to the XY plane.
Description
technical field [0001] The invention relates to the field of crystal technology, in particular to a titanium single crystal with a target crystal plane surface and a preparation method thereof. Background technique [0002] Titanium has the characteristics of excellent specific strength, fracture toughness, heat resistance, corrosion resistance and biocompatibility, and has broad applications in aerospace, biomedicine, marine chemical industry, automotive nuclear power and other fields. Single crystal α-titanium has a close-packed hexagonal structure, and its surface properties (including physical, chemical, mechanical, and biological properties) often present significant anisotropy, which has an important impact on the system stability and service life of titanium metals and devices. Therefore, according to the application field and specific requirements, it is necessary to design and prepare a titanium single crystal wafer with a specific crystallographic orientation on th...
Claims
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Application Information
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