{
  "$type": "site.standard.document",
  "description": "[Problem] Provided is a highly-durable multi-layer piezoelectric element that is free from peeling of external electrode off a stacked body even when driven to operate for long hours under a high electric field and high pressure. [Solution] A multi-layer piezoelectric element (1) includes a stacked…",
  "path": "/patents/1003824",
  "publishedAt": "2012-04-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M51/0603",
    "KYOCERA CORP [JP]"
  ],
  "textContent": "[Problem] Provided is a highly-durable multi-layer piezoelectric element that is free from peeling of external electrode off a stacked body even when driven to operate for long hours under a high electric field and high pressure. [Solution] A multi-layer piezoelectric element (1) includes a stacked body (7) configured so that piezoelectric layers (3) and internal electrode layers (5) are alternately laminated, and an external electrode (8) composed of a sintered material of both electrically conductive particles and a glass, the external electrode (8) which is bonded to a side surface of the stacked body (7) and makes electrical connection with the internal electrode layers (5). The external electrode (8) has a stacked body-side layer region (8a) containing glass as secondary constituent at its stacked body-facing side, and an exterior-side layer region (8b) containing glass as minor constituent at its exterior side. The glass of the exterior-side layer region (8b) is distributed along grain boundary of the conductive particles on an outermost surface of the exterior-side layer region (8b).",
  "title": "LAMINATED PIEZOELECTRIC ELEMENT, INJECTION DEVICE USING SAME, AND FUEL INJECTION SYSTEM"
}