Preparation and property of SiAlON ceramic used on the drilling mud pump cylinder sleeve

Wang, Y.; Liu, B.; Ma, Guansheng; Li, Zhixiong

doi:10.1179/1432891715z.0000000001999

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…To put it into perspective, the compressive strength of β‐SiAlON is ∼84 MPa, but after CaO addition, this value increased to 150−160 MPa. CaO is produced as a result of decomposition of CaCO 3 , which forms a eutectic phase with Al 2 O 3 and SiO 2 on the surface of silicon powder to promote the sintering of β‐SiAlON grains, thereby significantly increasing the compressive strength of the material 22,23 …”

Section: Resultsmentioning

confidence: 99%

The effect of CaO on the physicochemical and biological properties of β‐SiAlON ceramics

Jin

et al. 2021

J Am Ceram Soc.

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To investigate the effects of CaO on the physicochemical and biological properties of β-SiAlON, β-SiAlON ceramics containing CaO were prepared using the direct nitriding method. The results of X-ray powder diffraction and scanning electron microscopy demonstrated that β-SiAlON remained in the material phase because the addition of Ca did not result in the formation of Ca-α-SiAlON. However, CaO promoted the sintering of β-SiAlON grains and significantly decreased porosity and increased bulk density and compressive strength. According to a chemical stability study, when β-SiAlON ceramics powder was soaked in deionized water and a cell culture medium, it was noted to have negative electricity. A reaction occurred with the H + and OH − ions in the deionized water, leading to the formation of surface structures, such as Si-OH, Al-OH, and N-H. Moreover, the addition of CaO caused a different chemical reaction among ions or ion groups in the culture medium, and new chemical groups formed on the material surface that interacted with the culture medium, which resulted in an alteration of the zeta potential and surface chemical properties of β-SiAlON. MC3T3-E1 cells cultured on the surface of ceramics proved that the cells cannot adhere well to the surface of β-SiAlON ceramics with CaO, although they could proliferate well around those with only β-SiAlON. Therefore, the change in the surface chemical properties provides good anticell adhesion ability, which makes β-SiAlON with CaO a biocompatible material that can be used to prevent contamination caused by cell adhesion, with possible applications in biosensors or biomedical equipment that must be used in sterile environments.

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Section: Resultsmentioning

confidence: 99%

The effect of CaO on the physicochemical and biological properties of β‐SiAlON ceramics

Jin

et al. 2021

J Am Ceram Soc.

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“…Mud pumps are the most important power machinery of the hydraulic pond-digging set during reclamation [5] and are major facilities to transport dense mud during river dredging [6]. During oil drilling, mud pumps are the core of the drilling liquid circulation system and the drilling facilities, as they transport the drilling wash fluids (e.g., mud and water) downhole to wash the drills and discharge the drilling liquids [7][8][9]. e key part of a mud pump that ensures mud circulation is the piston [10,11].…”

Section: Introductionmentioning

confidence: 99%

Sealing Performance of Bionic Striped Mud Pump Piston

Cong

Gao

Sun³

et al. 2019

Advances in Materials Science and Engineering

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The mud pump piston is a key part for providing mud circulation, but its sealing performance often fails under complex working conditions, which shorten its service life. Inspired by the ring segment structure of earthworms, the bionic striped structure on surfaces of the mud pump piston (BW-160) was designed and machined, and the sealing performances of the bionic striped piston and the standard piston were tested on a sealing performance testing bench. It was found the bionic striped structure efficiently enhanced the sealing performance of the mud pump piston, while the stripe depth and the angle between the stripes and lateral of the piston both significantly affected the sealing performance. The structure with a stripe depth of 2 mm and angle of 90° showed the best sealing performance, which was 90.79% higher than the standard piston. The sealing mechanism showed the striped structure increased the breadth and area of contact sealing between the piston and the cylinder liner. Meanwhile, the striped structure significantly intercepted the early leaked liquid and led to the refluxing rotation of the leaked liquid at the striped structure, reducing the leakage rate.

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