grinding.
3.2. Filling up Powder at Sample Holder
X-ray diffractometer need to a flat sample plane of 1cm×2cm. We fill up powder at holder to obtain a flat sample plane. A procedure is below(Fig. 10) when we fill up at a general metal holder.
Fig. 10. Filling up at a general metal holder.
1) Put a sample over thick glass plate(A direction of sample holder surface is belo
Grinding(갈기)
- Grinding의 목적
표면에 손상을 제거하고, 시편을 편평하게 하여 표면의 조도를 순차적으로 미세하게 한다.
Polishing단계를 보다 짧은 시간 안에 끝낼 수 있도록 최소의 손상만 입은 평편한 표면을 얻는다.
- Grinding의 단계
평면 Grinding
Grinding의 첫 단계는 항상 PG로 시작된다. PG
고상법을 이용하여 만든 Y2O3:Eu 분말의 특성
황경섭, 김동운, 이상준, 이수영, 임상영
신소재공학과 성균관대학교
Characteristics of Y2O3:Eu powder using Solid state reaction
Hwang Gyung Sub, Kim Dong Un, Lee Sang Jun, Lee Soo Yung, Im Sang Yung
Advanced Materials Science and Engineering, SungKyunKwan Univ.
Abstract : Eu는 희토류 금속으로 촉매,
ARCTIC BLUE
by Ross LaManna
FADE IN:
1 EXT. BOREAL FOREST - ALASKA - (AERIAL SHOT) - DAY
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Flying. Not at the intangible height of a jet, but at
spitting distance from the treetops. Were in central
Alaska, the Big Lonely, just north of the Arctic Circle.
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A thick forest follows the contours of mountain foothills
like a deep-pile carpet. Up at treeline the forest thins to
tundra, a grassy
grinding her hips into him, her head arched
back, her hands rubbing lightly over her breasts. She reaches
down, grabbing his hips and jerks them upwards, forcing him
deeper inside her. They move together -- faster -- and faster.
The CAMERA slowly begins to PULL BACK. As it does we see what
we are watching is on a TELEVISION.
Further back still. We see TWO UNIFORMED POLICE OFFICERS
standing before